Fit Tube

Fit Tube by Iframely gives you a quick way to get responsive embed codes for YouTube and Vimeo.

Fit Tube gives you quick way to get responsive embed codes for YouTube and Vimeo videos you see on the web.
Just hover the player and click "Get Embed Code" link.
It also fixes the common mistake of bloggers by stretching the players you see on the blogs take all available space for your best experience.
To see how plugin works, you may visit http://videos.antville.org/ - there are always plenty of music videos there.